Francisco's Electric Pajero

Post up a thread for your EV. Progress pics, description and assorted alliteration
Rusdy
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Re: Francisco's Electric Pajero

Post by Rusdy » Thu, 11 Oct 2018, 10:53

Richo wrote:
Tue, 09 Oct 2018, 13:10
Machinist and controller design your like superman :mrgreen:
One short from superman status tho'. But not hard to catch up php codes. :lol:

francisco.shi
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Re: Francisco's Electric Pajero

Post by francisco.shi » Fri, 12 Oct 2018, 10:15

Your comment about catching up with php got me thinking about the pictures. I wonder if I can put the picture as a HTML picture link. So here is a test.
So here is a picture of the inverter cad model.
<img src="https://photos.app.goo.gl/GADGHhgUx2t3LvvDA" class="postimage" alt="Image">
See if this works.

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brendon_m
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Re: Francisco's Electric Pajero

Post by brendon_m » Fri, 12 Oct 2018, 10:41

Sort of works. I have to click on the link to view the image, it's not embedded in the post

rhills
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Re: Francisco's Electric Pajero

Post by rhills » Fri, 12 Oct 2018, 10:56

The Forum software filters out ordinary HTML to prevent hackers from abusing a forum.

You can insert image links via the standard forum [ img ] tag like so:

Image

Unfortunately, Google seem to have "fixed" their photo links to prevent you embedding them on HTML pages and that's why the above link doesn't work. There used to be an option when creating a link to a Google Album photo to make the link "publicly viewable" but that seems to have gone now.
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2014 Mitsubishi Outlander Aspire PHEV
Jul 2014 - Jun 2018
Total Petrol: 586.8L
ODO: 42885
Av Consumption: 1.37 L/100km

francisco.shi
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Re: Francisco's Electric Pajero

Post by francisco.shi » Fri, 19 Oct 2018, 11:17

I have sent some of the parts for the gear box and the transistor pack coolers. It turns out I can get them made in China and shipped for about the same of what the material would cost me to buy. So now I am waiting for the parts.
In the meantime I figured I would work on the batteries. The biggest problem now is I need to get a model of the bottom of the car but I can not do that without removing the transmission, engine, fuel tank, exhaust etc. So I decided to buy a rolling shell from the wreckers. The benefit is I can use it as a test bed to get everything right before I disassemble the working vehicle.
Here is a picture of the bottom of the Pajero. https://photos.app.goo.gl/GFcfRSNyoTCcsT3BA
Here is a picture of the CAD model of the bottom including where the motors will go I have taken a guess about the size of the box for the inverter.
https://photos.app.goo.gl/wWJNWtHgtnrQVbVJ8

francisco.shi
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Re: Francisco's Electric Pajero

Post by francisco.shi » Fri, 19 Oct 2018, 11:26

After getting the model of the bottom I can now start to work out how much space I have for the battery pack.
Here is a picture of the model with the battery pack.
https://photos.app.goo.gl/E6qJgNRy54eqaP6P9.

I decided to use the E63 LG batteries.
Battery specs:
Nominal Voltage : 3.6V
Nominal Capacity: 63Ah
Dimension : 330(L)mm*120(W)mm*12(L)mm
Weight: 969g
Continuous discharge rate: 2C
Peak discharge rate:5C

I will be using 3 cells in parallel
This is a preliminary model of each 3P cell with cooling plates between each cell.
https://photos.app.goo.gl/FJcMwZBAcVHDqXPPA
The battery pack will be 189Ah and I can fit a total of 103 3P cells. (3P103S)
Here is a picture with the battery pack box with the cells inside.
https://photos.app.goo.gl/XsHLSzFguon64sqs7
And here is a test run of the cooling plate. I just had to make sure I could make the cooling plates.
https://photos.app.goo.gl/2jcfNQ3U4uZVyfFP9

Unfortunately to get the full power that the motors and inverters will be capable off I would need 10C peak. So I will have to run at lower power.
My priority was more with total energy instead of straight out power.
It may be possible to get more than 5C if I cool the batteries.

I am still working on how to get the water supply to all the cooling pipes and how to get the bus bars in.

So far I have ordered 40 Cells so I can make a trail pack and see how things go. I will also use these cells for testing the BMS and the inverters.

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Richo
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Re: Francisco's Electric Pajero

Post by Richo » Fri, 19 Oct 2018, 12:32

francisco.shi wrote:
Fri, 19 Oct 2018, 11:26
It may be possible to get more than 5C if I cool the batteries.
Usually the internal resistance plays a part.
Increase the current the terminal voltage drops further.
So increasing current / C-rating may not increase the peak power.

It will however give it to you a fraction longer.

Still 300kW is better than nearly everyone :mrgreen:
Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

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